diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index eaac66cd..97bdd9af 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -38,14 +38,14 @@
 find_package(MiniUpnpc QUIET)
 
 # FreeBSD doesn't play well with the local copy, so default to using shared
-SET(USE_SHARED_MINIUPNPC false)
+set(USE_SHARED_MINIUPNPC false)
 
 # If we have the correct shared version and we're not building static, use it
-IF(STATIC)
- SET(USE_SHARED_MINIUPNPC false)
-ELSEIF(MINIUPNP_FOUND AND MINIUPNPC_VERSION_1_7_OR_HIGHER)
- SET(USE_SHARED_MINIUPNPC true)
-ENDIF()
+if(STATIC)
+ set(USE_SHARED_MINIUPNPC false)
+elseif(MINIUPNP_FOUND AND MINIUPNPC_VERSION_1_7_OR_HIGHER)
+ set(USE_SHARED_MINIUPNPC true)
+endif()
 
 if(USE_SHARED_MINIUPNPC)
   message(STATUS "Using shared miniupnpc found at ${MINIUPNP_INCLUDE_DIR}")
@@ -59,7 +59,7 @@ else()
   else()
     message(STATUS "Using miniupnpc from local source tree (/external/miniupnpc)")
   endif()
-  
+
   set(UPNPC_BUILD_STATIC ON CACHE BOOL "Build static library")
   set(UPNPC_BUILD_SHARED OFF CACHE BOOL "Build shared library")
   set(UPNPC_BUILD_TESTS OFF CACHE BOOL "Build test executables")
@@ -78,22 +78,22 @@ endif()
 
 find_package(Unbound)
 
-IF(NOT UNBOUND_INCLUDE_DIR OR STATIC)
+if(NOT UNBOUND_INCLUDE_DIR OR STATIC)
   add_subdirectory(unbound)
 
   set(UNBOUND_STATIC true PARENT_SCOPE)
   set(UNBOUND_INCLUDE "${CMAKE_CURRENT_SOURCE_DIR}/unbound/libunbound" PARENT_SCOPE)
   set(UNBOUND_LIBRARY "unbound" PARENT_SCOPE)
   set(UNBOUND_LIBRARY_DIRS "${LIBEVENT2_LIBRARY_DIRS}" PARENT_SCOPE)
-ELSE()
-  MESSAGE(STATUS "Found libunbound include (unbound.h) in ${UNBOUND_INCLUDE_DIR}")
-  IF(UNBOUND_LIBRARIES)
-    MESSAGE(STATUS "Found libunbound shared library")
+else()
+  message(STATUS "Found libunbound include (unbound.h) in ${UNBOUND_INCLUDE_DIR}")
+  if(UNBOUND_LIBRARIES)
+    message(STATUS "Found libunbound shared library")
     set(UNBOUND_STATIC false PARENT_SCOPE)
     set(UNBOUND_INCLUDE ${UNBOUND_INCLUDE_DIR} PARENT_SCOPE)
     set(UNBOUND_LIBRARY ${UNBOUND_LIBRARIES} PARENT_SCOPE)
     set(UNBOUND_LIBRARY_DIRS "" PARENT_SCOPE)
-  ELSE()
+  else()
     die("Found libunbound includes, but could not find libunbound library. Please make sure you have installed libunbound or libunbound-dev or the equivalent")
-  ENDIF()
-ENDIF()
+  endif()
+endif()